An advanced-strength retinoid serum from Sunday Riley, featuring an innovative formula with a 6.5% solution of stabilized retinoid blends and botanical, retinol-alternative extracts into the skin. Combining 5% retinoid ester blend, 1% liposomal-encapsulated retinol blend, and 0.5% blue-green algae with natural, retinoid-alternative activity, this serum fights the signs of aging and improves the look of congested and UV damaged skin. Paired with natural ingredients like Hawaiian white honey and cactus extract to give the skin a calm, more even-toned complexion. This retinoid serum targets a wide array of skin concerns, making it great for retinoid beginners and devotees* 1 fl oz* Formulated for all skin types* Cruelty-Free, Sulfate-Free, Paraben-Free, Gluten-Free, Soy-Free* Phthalate-Free, Fragrance-Free Vegetarian*Ingredients:* Apply 1-2 pumps in the evening to clean, dry skin. For Sunday Riley's targeted instructions, see below: For new retinoid users: Use two days on, two days off. Work your way up to every other day, then to daily, evening use. Follow with a hydrating oil or moisturizer, like C.E.O. Glow or Juno. Use an AHA serum, like Good Genes Lactic Acid Treatment, on alternate nights to sweep away dead skin cells. For advanced retinoid users: Use daily, in the evenings. Follow with a hydrating oil or moisturizer, like C.E.O. Glow or Juno. Use an AHA serum, like Good Genes Lactic Acid Treatment, in the mornings to sweep away dead skin cells. For sensitive skin: Apply a few drops of a gentle, hydrating oil, like C.E.O. Glow or Juno to your skin before applying A+ serum*Ingredients:* ater/Eau/Agua, Propanediol, Dimethyl Isosorbide, Triheptanoin, Dimethicone, Glycerin, Pentylene Glycol, Hexyldecanol, Disiloxane, Cetyl PEG/PPG-10/1 Dimethicone, Diheptyl Succinate, Propylene Carbonate, Hydroxypinacolone Retinoate, PPG-24-Glycereth-24, Phenyl Trimethicone, Retinol, Ubiquinone (CoQ10), Honey Extract, Sodium Hyaluronate Crosspolymer, Algae Extract, Zingiber Officinale (Ginger) Extract, Opuntia Ficus-indica Fruit Extract, Bisabolol, Butyrospermum Parkii (Shea) Butter, Phospholipids, Saccharomyces Cerevisiae Extract, Lecithin, Sodium Acrylates Copolymer, Hydrogenated Polyisobutene, 1,2-Hexanediol, 4-t- Butylcyclohexanol, Polyglyceryl-10 Stearate, Caprylyl Glycol, Helianthus Annuss (Sunflower) Seed Oil, Sorbitol, Cetylhydroxyproline Palmitamide, Polysilicone-11, Benzoic Acid, Dehydroacetic Acid, Sodium Phytate, Glyceryl Polyacrylate, Polysorbate, Hydroxyphenyl Propamidobenzoic Acid, Stearic Acid, Brassica Campestris Sterols, PVP, Capryloyl Glycerin/Sebacic Acid Copolymer, Sodium Benzoate, Alcohol, Potassium Phosphate, Decyl Glucoside, Phenoxyethanol, Hexylene Glycol, Potassium Sorbate, Tocopherol.